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MOLTEN-SALT REACTOR PROGRAM - page 10 / 122

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PART 2. MATERIALS STUDIES

2.1. METALLURGY51

Dynamic Corrosion Studies51

INOR-8 Thermal-Convection Loops52

Inconel Thermal-Convection Loops54

General Corrosion Studies54

Penetration of Graphite by Molten Fluoride Salts54

Uranium Precipitation from Molten Fluoride Salts in Contact with Graphite58

Thermal-Convection-Loop Tests of Brazing Alloys in Fuel 13060

Thermal-Convection-Loop Tests of the Compatibility of INOR-8, Graphite,

and Fuel 13061

Mechanical Properties of INOR-863

Creep Tests63

Fatigue Studies63

Shrinkage Characteristics of INOR-863

Materials Fabrication Studies65

Effect on INOR-8 of Aging at High Temperatures65

Triplex Heat Exchanger Tubing67

Welding and Brazing Studies68

Procedures for Welding INOR-868

Mechanical Properties of INOR-8 Welds70

Fabrication of Apparatus for Testing the Compatibility of Molten Salts and Graphite73

2.2. CHEMISTRY AND RADIATION DAMAGE75

Phase Equilibrium Studies75

The System LiF-BeF2-ThF475

The System NaF-BeF2-ThF477

The System NaF-ThF4-UF478

The System SnF2-NH4HF278

Solubility of PuF3 in Converter Fuels80

Separation of 7LiF from 7LiF-BeF280

Fission-Product Behavior81

Precipitation of SmF3 with CeF381

Chemical Reactions of Oxides with Fluorides in Molten-Fluoride-Salt Solvents82

Gas Solubilities in Molten Fluoride Salts85

Solubility of Neon in LiF-BeF285

Solubility of CO2 in NaF-BeF285

Chemistry of the Corrosion Process86

Samples from Operating Loops86

Radioactive Tracer Analyses for Iron in Molten Fluoride Salts87

Activities in Metal Alloys87

Vapor Pressures of Molten Salts88

Permeability of Graphite by Molten Fluoride Salts88

Radiation Damage Studies91

INOR-8 Thermal Convection Loop for Operation in the LITR91

In-Pile Static Corrosion Tests91

Preparation of Purified Materials92

Purification, Transfer, and Service Operations92

Fuel Replenishment Tests92

Pure Compounds Prepared with Molten Ammonium Bifluoride93

Reaction of Chromous Fluoride with Stannous Fluoride94

2.3. FUEL PROCESSING95

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